Printing apparatus, method of controlling the same, and storage medium

ABSTRACT

A printing apparatus has a sheet holding unit having a detection unit for detecting a size of a sheet which is held and a storage unit configured to store sheet information including at least a size of a sheet as information representing a sheet. The apparatus sets first sheet information selected by a user in association with the sheet holding unit from a plurality of items of sheet information stored in the storage unit and notifies the user of a mismatch in a case where a size of a sheet that the first sheet information set in the setting indicates, and a size of a sheet detected by the detection unit are mismatched.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a printing apparatus, a method ofcontrolling the same, and a storage medium.

2. Description of the Related Art

In print on-demand (POD) systems, there is a need for paper to bemanaged in a centralized fashion by registering media information, whichis information of paper used for printing (media), including the papersize. A user of this kind of system manages several hundred types ofpaper using management numbers and names. Meanwhile, registering byinputting a plurality of items of the media information for all of thetypes of paper is very cumbersome for users. For example, registering byinputting all of the attributes of the paper when registering mediainformation of paper for which only the size is different to other paperis time-consuming, cumbersome work. Also, when every single type ofpaper that is only used temporarily is registered, a problem exists inthat a large amount of media information ends up being registered,searching the media information requires time, and things become all themore inconvenient.

In general, many systems set an upper limit of the number ofregisterable types of paper to be several hundred, but in POD systems,there are cases in which the number of types of paper maintained exceedsthis. In such environments, in cases where the upper limit on the numberof paper types that can be registered is reached without havingregistered all of the paper types, it is necessary to delete mediainformation that has already been registered.

One method for removing effort of registering paper types, found inJapanese Patent Laid-Open No. 2007-301911, is to arrange a Type 1 forregistering a rough type of paper, and a Type 3 by which a detailed typeof paper is registered. A three-type paper type database is kept for theType 1, the Type 2 and a Type 3, which can be registered by changingattributes, based on information of the paper type registered for Type 1and Type 3. A user can find base paper types from the Type 1 and theType 3, copy them and create a Type 2 paper type, and can register thepaper type by changing attribute values as necessary. Because of this,the effect of eliminating effort of inputting all of the attributes foreach paper type is achieved.

However, with the above described conventional technique, the problemswhen there is a limit on the number of paper information items that canbe registered cannot be solved, a separate effort of searching for baseinformation of paper out of Type 3 information of which severalthousands of types of paper may be registered ends up being necessary.

Also, when paper information including paper size is set for a cassette,there is the possibility that the size of the paper actually housed inthe cassette and the size of the paper information set for the cassetteare different.

SUMMARY OF THE INVENTION

An aspect of the present invention is to eliminate the above-mentionedproblems which are found in the conventional technology.

A feature of the present invention is to provide a technique in which itis possible to notify a user when a size of a sheet of a sheet holdingunit, and a size of a sheet of sheet information set for the sheetholding unit are mismatched.

Also, a feature of the present invention is to provide a technique inwhich the effort of registering paper information is simplified.

According to an aspect of the present invention, there is provided aprinting apparatus comprising: a sheet holding unit having a detectionunit for detecting a size of a sheet which is held, configured to hold asheet; a storage unit configured to store sheet information including atleast a size of a sheet as information representing a sheet; a settingunit configured to set first sheet information selected by a user inassociation with the sheet holding unit from a plurality of items ofsheet information stored by the storage unit; and a notification unitconfigured to notify the user of a mismatch in a case where a size of asheet that the first sheet information set by the setting unitindicates, and a size of a sheet detected by the detection unit aremismatched.

According to another aspect of the present invention, there is provideda method of controlling a printing apparatus having a sheet holding unithaving a detection unit for detecting a size of a sheet which is held,configured to hold a sheet, and a storage unit configured to store sheetinformation including at least a size of a sheet as informationrepresenting a sheet, the method comprising: setting first sheetinformation selected by a user in association with the sheet holdingunit from a plurality of items of sheet information stored in thestorage unit; and notifying the user of a mismatch in a case where asize of a sheet that the first sheet information set in the settingindicates, and a size of a sheet detected by the detection unit aremismatched.

Further features and aspects of the present invention will becomeapparent from the following description of exemplary embodiments, withreference to the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute apart of the specification, illustrate embodiments of the invention and,together with the description, serve to explain the principles of theinvention.

FIG. 1 is a block diagram for showing a configuration of an imageforming apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart for describing processing by the image formingapparatus according to the first embodiment.

FIG. 3 depicts a view for showing an example of a screen displaying, ona console unit, paper information assigned to TRAY 1 in step S201 ofFIG. 2.

FIG. 4 depicts a view for showing an example of a screen displayed onthe console unit in step S204 of FIG. 2.

FIG. 5A and FIG. 5B depict views for showing examples of screens onwhich a paper database is displayed for cases where, in step S208 ofFIG. 2, registering to the paper database and not registering to thepaper database are selected respectively.

FIG. 6A and FIG. 6B depict views for showing examples of screens onwhich the paper information assignment states of each tray of a cassetteis displayed for cases where, in step S207 of FIG. 2, registering to thepaper database and not registering to the paper database are selected.

FIG. 7 depicts a view for showing an example of a screen for explaininga situation different to FIG. 4.

FIG. 8 depicts a view for showing an example of an alerting screendisplayed when paper information having identical attribute values isregistered.

FIG. 9A and FIG. 9B depict views for explaining examples in which anincrease in the number of paper information items is held down byregistering using “RES”, which indicates inputting upon use.

FIG. 10 is a flowchart for describing processing for generating paperinformation in accordance with an input print job in the image formingapparatus according to the first embodiment.

FIG. 11 depicts a view for showing a configuration of a multi functionperipheral (MFP) which is an example of the image forming apparatusaccording to the second embodiment of the present invention and aconfiguration of a system including the image forming apparatus.

FIG. 12 is a block diagram for showing a hardware configuration of acontroller, and connected peripherals, according to the secondembodiment.

FIG. 13 depicts an outline view of the image forming apparatus accordingto the second embodiment.

FIG. 14 depicts a top view a console unit of the image forming apparatusaccording to the second embodiment.

FIG. 15 depicts a view for showing an example of paper informationstored in a cassette of the image forming apparatus according to thesecond embodiment.

FIG. 16 depicts a view for explaining a mechanism for automaticallydetecting the size of the paper set (housed) in the cassette of theimage forming apparatus according to the second embodiment.

FIGS. 17A-17E depict views for explaining examples of a screens, whichare user mode screens displayed on the console unit in the MFP accordingto the second embodiment, for cases in which cassette paper sizesettings and paper type registration or setting is performed.

FIG. 18 is a flowchart for describing processing executed in a casewhere a user closes the cassettes having set paper into the cassettes,or where a user moves guides of a cassette in the image formingapparatus according to the second embodiment.

FIG. 19 is a flowchart for describing other processing executed in acase where a user closes the cassettes having set paper into thecassettes, or where a user moves guides of a cassette in the imageforming apparatus according to the second embodiment.

FIG. 20 depicts a view for showing an example of a screen for confirmingconsistency between paper sizes detected in the cassettes in the imageforming apparatus according to the second embodiment and the paper sizesof paper information that a user set for the cassettes.

FIG. 21 depicts a view for illustrating a data configuration of paperinformation in a third embodiment.

FIGS. 22A, 22B and 22C depict views for showing examples of screens fora user to operate when setting paper information for a paper feedcassette in the third embodiment.

FIG. 23 is a flowchart for describing processing for when a mismatchbetween an auto-detected paper size and a paper size set in paperinformation occurs in the image forming apparatus according to the thirdembodiment.

FIG. 24 is a flowchart for showing processing when a paper size mismatchoccurs upon detection of opening or closing of a paper feed cassettedoor, or the pulling out/putting in of a cassette in the image formingapparatus according to the third embodiment.

DESCRIPTION OF THE EMBODIMENTS

Embodiments of the present invention will be described hereinafter indetail, with reference to the accompanying drawings. It is to beunderstood that the following embodiments are not intended to limit theclaims of the present invention, and that not all of the combinations ofthe aspects that are described according to the following embodimentsare necessarily required with respect to the means to solve the problemsaccording to the present invention.

FIG. 1 is a block diagram for showing a configuration of an imageforming apparatus according to an embodiment of the present invention.Note, an image forming apparatus 100 is a printing apparatus such as aprinter or a multi function peripheral (MFP), for example.

A console unit 101 is operated by a user, and is provided with a displaydevice for displaying information necessary for the user to select afunction, and an input unit such as buttons for instructing selection offunctions, execution of printing, and the like. Note, the display deviceof the console unit 101 is provided with a touch panel function, andconfiguration may be taken such that by a user can perform selection ofmenus and input of various information by touching the buttons displayedon the display device. A RAM 107 is used for storing such things asvarious setting information such as parameters input from the consoleunit 101, information related to printing such as print informationcorresponding to a print unit 108, and generated print data. A CPU 104references the content of the RAM 107, and rewriting is performed.Additionally, the RAM 107 is used as a buffer memory, and as a workmemory necessary for performing image processing.

A cassette 102 is a tray unit for storing paper used for printing. Thecassette 102 has one or more paper tray, and distinguishes the existenceor absence of paper set in the paper trays, its amount or a type of thepaper, and the CPU 104 stores this information in the RAM 107 asparameters. Also the user can change this information via the consoleunit 101.

An interface unit 103 connects a network, a scanner, a USB memory, orthe like. The CPU 104 stores information input via the interface unit103 into the RAM 107. Image data stored in the RAM 107, after havingimage processing applied to it by the image processing unit 106, isoutput to a print unit 108 and printed.

The CPU 104 reads out a control program stored in an HDD 105, loads theprogram into a RAM 107, and by executing the program loaded into the RAM107, controls the operation of the image forming apparatus 100. An imageprocessing unit 106 performs image processing in order that image datafor printing stored in the RAM 107 be printable by the print unit 108.The print unit 108 is a printer engine for printing image datatransferred from the image processing unit 106.

FIG. 2 is a flowchart for describing processing by the image formingapparatus 100 according to the first embodiment. The processingillustrated in the flowchart is executed by a program that executes theprocessing being installed in the HDD 105, the CPU 104 reading theprogram out and loading it into the RAM 107, and the CPU 104 executingthe program.

The processing shown in the flowchart is initiated by a user operatingthe console unit 101, and performing processing for registering paperinformation for one of the trays (sheet feed trays) of the cassette 102.Note, the cassette 102 has a tray having the name “TRAY 1”.

Firstly, in step S201, the CPU 104 confirms that paper information isassigned for TRAY 1. Note, as a premise in such a case, it is necessarythat some kind of paper information be registered for the image formingapparatus 100. Note, regarding the paper information, a user mayregister it by operating the console unit 101, or it may be registeredin the image forming apparatus 100 from the start. The CPU 104 registerspaper information confirmed to be assigned for TRAY 1 in step S201 tothe HDD 105. Regarding the registration of the paper information, itwill be explained later with reference to FIG. 3.

Next, the CPU 104 moves the processing to step S202, and confirms thatthe user set paper for TRAY 1 for which it was confirmed in step S201that paper information is assigned. Note, when it is confirmed, in stepS201, that the paper information is assigned for TRAY 1, in cases wherethe paper is already set for TRAY 1, the processing proceeds to stepS203 (step S202 is executed). In step S203, the CPU 104 determineswhether or not (“RES”), which indicates inputting upon use, is set foran attribute of the paper information confirmed in step S201. “RES”indicates selection in order that rather than inputting the value uponregistration of the paper information to the paper database (existing inthe HDD 105), the value be input when the paper is actually set for TRAY1. Attributes of the paper information will be explained later withreference to FIG. 3. When, in step S203, it is determined that there isno attribute for which “RES” is set, the processing completes.

On the other hand, when the CPU 104, in step S203, determines that thereis an attribute for which “RES” is set in the paper information of TRAY1, the processing proceeds to step S204, and the CPU 104 displays, onthe console unit 101, a screen for inputting values for attributes forwhich “RES” is set in step S203. Buttons for selecting whether or not toregister to the paper database which a user selects are included on thescreen, in step S207. The screen displayed in step S204 will beexplained later with reference to FIG. 4.

Next, the processing proceeds to step S205, and the CPU 104 receives avalue that the user input for an attribute for which “RES” is set on thescreen displayed in step S204. Then, the processing proceeds to stepS206, and the CPU 104 stores the paper information of TRAY 1 having thevalue input in step S205 into a region of the RAM 107 rather than theplain paper database in the HDD 105. The paper information is storedseparately to the paper information assigned for TRAY 1 in step S201.The paper information assigned for TRAY 1 in step S201 is deleted fromthe RAM 107 when the user finalizes the paper information of TRAY 1.This temporary paper information may be maintained in the HDD 105, andit is maintained in a region different to the plain paper database insuch a case as well, and it is deleted at the point in time when theassignment to TRAY 1 is removed.

Next, the processing proceeds to step S207, and the CPU 104 waits forthe user to select, via the screen displayed on the console unit 101 instep S204, whether or not the temporary paper information of TRAY 1created in step S206 is registered to the paper database of the HDD 105similarly to the plain paper information of TRAY 1. In step S208, theCPU 104 moves the processing to step S209 when it determines that theuser specified that it is registered, and the CPU 104 creates aduplicate of the paper information of TRAY 1 created in the RAM 107 instep S206 in the paper database in the HDD 105. Here, the paperinformation of TRAY 1 registered in the paper database of the HDD 105,unlike the paper information generated in the RAM 107 in step S206, isnot deleted even if the assignment for TRAY 1 is deleted. Note, thepaper information registered here is different to the paper informationassigned for TRAY 1 in step S201, and even in a case where step S209 isexecuted, the paper information assigned in step S201 remains. In stepS209, when the paper information is registered, the processing proceedsto step S210, the CPU 104 switches the paper information of TRAY 1 tothe paper information registered in step S209, and the processingcompletes.

Meanwhile, when the CPU 104, in step S208, determines that the userselected that the paper information is not registered, it moves theprocessing to step S211. In step S211, the CPU 104, without generatingthe paper information in the paper database of the HDD 105, assigns thepaper information generated in step S206 for TRAY 1, and the processingcompletes.

FIG. 3 depicts a view for showing an example of a screen displaying, onthe console unit 101, paper information assigned for TRAY 1 in step S201of FIG. 2.

Here, the name of the paper information is “Paper_Res” and attributesfor the size, the grammage, the surface characteristics, specialcharacteristics, color, and the like are held. Note, attributes that canbe registered are not limited to those shown in FIG. 3, and there is noneed for all of the attributes shown in FIG. 3 to be included. In FIG.3, “RES”, which indicates selection upon use, is set for size andgrammage. In such a case, in step S203 of FIG. 2, it would be determinedthat there is an attribute for which “RES” is set, and the processingtransitions to step S204.

FIG. 4 depicts a view for showing an example of a screen displayed onthe console unit 101 in step S204 of FIG. 2.

In this screen, setting attributes or the name when it is determinedthat “RES”, which indicates inputting upon use, is set in step S203 ispossible. A setting button 401 is pressed to instruct a change of thename. Here, because the existence of paper information having identicalnames in the paper database is not allowed, in cases where registrationto the paper database is selected in step S207, registration attaching anew name that does not exist is necessary. In step S207, in cases oftemporary use where registration to the paper database in not selected,a change in the name is not necessary.

Setting buttons 402 and 403 are pressed to instruct input of a specificvalue for the paper size or the grammage for which “RES”, whichindicates inputting upon use, is set. A “use temporarily” button 404 isa button for selecting not registering the paper information into thepaper database in step S207. A “newly register” button 405 is a buttonfor selecting registration into the paper database. Note, configurationmay be taken such that the “newly register” button 405 cannot be presseduntil the name is changed with the setting button 401. Alternatively,configuration may be taken such that the “newly register” button 405 isdisplayed to be grayed out and that one cannot register in cases wherethe registration count of the paper database reaches an upper limit.Even in such a case, instructing the “use temporarily” button 404 ispossible.

Note, in cases where there is an automatic paper size detection functionprovided with a tray of the cassette 102, configuration may be takensuch that the paper size value is automatically updated with a valuedetected by the paper size detection function. In such a case, thesetting button 402 shown in FIG. 4 is not displayed, and the sizedetected by the paper size detection function is displayed in the sizecolumn.

FIG. 5A and FIG. 5B depict views for showing examples of screens onwhich the paper database is displayed for cases where, in step S208 ofFIG. 2, registering to the paper database, and not registering to thepaper database, are selected respectively.

These screens can be displayed on the console unit 101 when the useroperates the console unit 101.

FIG. 5A depicts a view for showing an example of a screen of the paperdatabase in a case where it is determined that registration to the paperdatabase is selected in step S208. FIG. 5A illustrates cases in whichthe name is set to “Paper” with the setting button 401 in FIG. 4, thesize is set to “A4” with the setting button 402, and the grammage is setto “100 g/m²” with the setting button 403, and new registration isinstructed with the “newly register” button 405.

Also, FIG. 5B illustrates an example of a screen of the paper databasein cases where not registering to the paper database is selected in stepS207. This example illustrates cases in which the size is set to “A4”with the setting button 402, the grammage is set to “100 g/m²” with thesetting button 403 and the “use temporarily” button 404 is pressed. InFIG. 5B, because not registering to the paper database is selected, thepaper information 501 indicating the name to be “Paper” is notregistered as in FIG. 5A.

FIG. 6A and FIG. 6B depict views for showing examples of screens fordisplaying paper information assignment states for each tray of thecassette 102 in cases where registering and not registering to the paperdatabase are selected in step S207 of FIG. 2. These screens aredisplayed on the console unit 101 when the user operates the consoleunit 101, and they are used as screens for performing the operation ofstep S201. Note, in FIG. 6A and FIG. 6B, cases of feed trays in whichthe first TRAY 1 is selected are shown.

FIG. 6A depicts a view illustrating an example of a screen indicatingpaper information assignment states of each tray for cases where, instep S207, the user selects registration to the paper database. Numeral602 denotes an image of the image forming apparatus 100. Numerals603-606 denote types of paper assigned for each tray. Here, the names ofthe trays are TRAY 1-TRAY 4.

In the processing of step S210 of FIG. 2, as illustrated in FIG. 5A, forthe paper of TRAY 1, the paper having the name “Paper” is switched toand registered. For this reason, as illustrated in numeral 603 of FIG.6A, the name of the type of the paper assigned for the first TRAY 1 is“Paper”. By pressing a details button 607 by selecting TRAY 1, the typeof the paper assigned for TRAY 1 can be changed, and detailedinformation of the paper can be confirmed. The OK button 608 is a buttonfor confirming the settings of the screens.

FIG. 6B depicts a view illustrating an example of a screen forindicating the paper information assignment states of the trays in caseswhere, in step S207 of FIG. 2, the user selects not registering to thepaper database. In FIG. 6B, portions that are common with FIG. 6A areshown with the same numerals. Here, because not registering the paperinformation shown in numeral 501 of FIG. 5A, for example, to the paperdatabase is selected, for the paper of TRAY 1, the name of the papertype “Paper_Res” assigned in step S201 is displayed as is as illustratedin numeral 603. However, in step S211, using the attribute input in stepS206, the paper information stored in the RAM 107 is switched. For thisreason, after TRAY 1 is selected, the information displayed in caseswhere detailed information of the paper information of TRAY 1 isdisplayed by selecting the details button 607 includes the value inputin step S205.

FIG. 7 depicts a view for showing an example of a screen for explaininga situation different to that of the previously described FIG. 4.

In FIG. 7, the value “RES”, which indicates inputting upon use, is setfor adjusting a color and an adjustment of the creep (shift) correctionamount.

For these attributes, there exist those that the print unit 108 does notuse, and those for which the print jobs for which they are used arelimited. In the example of FIG. 7, the attribute of the color is notused by the print unit 108, but rather is an attribute used for the userto distinguish the paper. Adjustment of the creep (shift) correctionamount is an attribute that the print unit 108 uses only in cases ofjobs where creep correction is used. For such attributes, it isinconvenient to always request input of values in step S204 of FIG. 2.For this reason, in FIG. 7, even though the values of the two attributesfor which “RES” is set are not specified, the remaining processing maybe made to be possible.

The adjustment of the creep (shift) correction amount is a value thatthe print unit 108 uses in cases where a job for performing a creepcorrection is input. Accordingly, in cases where the “use temporarily”button 404 is pressed without inputting a value for a creep correctionamount, when a job for which a creep correction is used is input, onceagain the inputting of the creep correction amount is prompted. Here,the example of the creep correction amount is given, but it is possibleto adapt the example for attributes used by the print unit 108 accordingto the content of the job such as adjustment amounts of curl correctionor an image position, or the number of tabs of the index sheet.

Note, even if in the paper information, other than the name, all of theattributes of the paper information is registered to be the same, fromthe perspective of the management of the paper information, there areuse cases where such paper information is registered. However, if paperinformation having the same attributes increases, convenience willdeteriorate. For this reason, in cases where paper information havingidentical attributes is registered, a warning message is displayed onthe console unit 101.

FIG. 8 depicts a view for showing an example of an alerting screendisplayed when paper information having identical attribute values isregistered.

In the screen of FIG. 8, a message indicating that paper informationhaving the same attributes is registered is displayed. Note, here, thename of the paper that is overlapping may be displayed in order that thepaper information is distinguishable. An OK button 802 is a button forinstructing the registration of the paper information to the paperdatabase in spite of the overlapping, and when the OK button 802 ispressed, the paper information is registered. A cancel button 803 is abutton for cancelling the registration of the paper information, and theregistration of the paper information is not performed when the cancelbutton 803 is pressed.

In contrast to this, FIG. 9A and FIG. 9B explain examples in which anincrease in the number of paper information items is held down byregistering using “RES”, which indicates inputting upon use.

FIG. 9A and FIG. 9B depict views for showing examples of displaying thepaper database in cases where “RES”, which indicates inputting upon use,is set for each attribute of the paper size, and cases where it is not.

In FIG. 9A, in cases where paper information for which only the papersize is different, and attributes other than the paper size attributeare the same exist, “RES” is set for the attribute corresponding to thepaper size, and it is registered as a single paper information item. Insuch a case, the paper information can be treated as a single paperinformation item encompassing a plurality of sizes where the type of thepaper is the same, and the grammage is 85 g/m² as with the name“Paper_Res” shown be numeral 902.

On the other hand, in FIG. 9B, the paper information of five types ofpaper, for which other than the paper size attributes are the same, isregistered without using “RES”. In such a case, as shown in numeral 903,paper information is necessary for all items having different papersizes from each other. Because there is an upper limit to the number ofpaper information items that can be registered to the paper database,collective registration of paper information as illustrated in FIG. 9Ais effective.

On the other hand, in order to strictly manage the paper information,operation in which paper information is generated and registered foreach size, as in FIG. 9B, can be considered. In such a case, the paperinformation is generated by first setting “RES”, which indicatesinputting upon use, for the attribute of the paper size as in FIG. 9A.Then, simply by inputting the size and the name by performing theprocessing of FIG. 2, the paper information can be generated for eachsize, as in FIG. 9B.

The following methods for specifying the paper to be used when a printjob is input into the image forming apparatus 100 through a networkconnected to the interface unit 103, or the like. One is a method ofspecifying the name of the paper, another one is a method of specifyingan ID assigned to the paper, and another is a method of specifyingattribute values of the paper. The previously described cases in whichpaper information having an attribute for which “RES”, which indicatesinputting upon use, is set is specified with a name or a paper ID, theinputting of the values indicating such attributes is necessary.

FIG. 10 is a flowchart for describing processing for generating paperinformation in accordance with an input print job in the image formingapparatus 100 according to the first embodiment. Note, the processingillustrated in the flowchart is executed by a program that executes theprocessing being installed in the HDD 105, loaded into the RAM 107 uponexecution, and executed under the control of the CPU 104.

The processing is initiated by a print job being received through theinterface unit 103. Firstly, in step S1001, information of the paperused in the print job specified by the name or the paper ID of the paperfor an input print job is acquired. With this, the processing proceedsto step S1002, and the CPU 104 searches the paper database of the HDD105 for the paper information specified by the print job. When, in stepS1003, the CPU 104 determines that the paper information specified bythe print job is not in the paper database, the processing proceeds tostep S1014, and the CPU 104 determines that there is no correspondingpaper. The processing completes.

Meanwhile, when the CPU 104, in step S1003, determines that the paperinformation corresponding to the specified paper is in the paperdatabase, the processing proceeds to step S1004, and the CPU 104investigates the value set for the attribute of the paper information ofthe paper database. Next, the processing proceeds to step S1005, and theCPU 104 determines whether or not there is an attribute for which “RES”,which indicates inputting upon use, is set. Here, when it is determinedthat there is no attribute for which “RES” is set, the processingproceeds to step S1013, the paper information found in step S1002 isfinalized, and the processing completes.

On the other hand, when, in step S1005, it is determined that there isan attribute for which “RES” is set, the processing proceeds to stepS1006, and the CPU 104 investigates whether or not there is paperinformation generated by deriving from the paper information. Here, thepaper information generated by deriving is paper information generatedbased on the paper information assigned in step S201, in step S206 ofFIG. 2. Because the paper information generated by deriving here ispaper information stored in the RAM 107, rewriting the specific papersize, or the like, of the attribute for which “RES” is set in step S205,a specific value is set for all of the attributes of the paperinformation generated by deriving.

When, in step S1007, the CPU 104 determines that there is no paperinformation generated by deriving, it moves the processing to stepS1012. In step S1012, the CPU 104 generates paper information for whichspecified attribute values are assigned for specified paper informationattributes for which “RES” is set of the paper database, and theprocessing proceeds to step S1013. In step S1013, the CPU 104 determinesthis paper information to be the paper information to be used in theprint job, the processing completes.

Meanwhile, when, in step S1007, the CPU 104 determines that there ispaper information generated by deriving, the processing proceeds to stepS1008, and the CPU 104 compares an attribute value of the paperinformation generated by deriving, and an attribute value specified bythe print job. When, in step S1009, the CPU 104 determines that theattribute value of the paper information generated by deriving and theattribute value specified by the print job are matching, the CPU 104moves the processing to step S1010. In step S1010, the CPU 104determines the paper information generated by deriving to be the paperinformation to be used by the print job, and the processing completes.

Meanwhile, when, in step S1009, the CPU 104 determines that the valuesof the attributes do not match, the CPU 104 moves the processing to stepS1012. In step S1012, the CPU 104 generates paper information for whichspecified attribute values are assigned for specified paper informationattributes for which “RES” is set of the paper database, and theprocessing proceeds to step S1013. In step S1013, the CPU 104 determinesthis paper information to be the paper information to be used by theprint job, the processing completes.

Next, explanation will be given providing concrete examples using FIG.9A and FIG. 9B.

In step S1001 of FIG. 10, cases are considered in which the input printjob is specifying for the paper information that the name is “Paper_Res”and the paper size is A4. In such a case, paper information for whichthe name is “Paper_Res” in the paper database exists. Because this paperinformation has an attribute for which “RES” is set, it is determinedwhether or not there is paper information derived from the name“Paper_Res” in step S1006 and in step S1007. If there is no derivedpaper information, the processing transitions from step S1007 to stepS1012. In step S1012, the CPU 104 generates paper information“Paper_Res” for which the paper size is A4 in the RAM 107, and, in stepS1013, determines the paper information to be the paper information tobe used by the print job.

Meanwhile, the paper information shown in FIG. 9B is paper informationgenerated by deriving from the paper information having the name“Paper_Res”. In such a case, the processing transitions from step S1007to step S1008. In such a case, paper information having the paper size“A4” exists (“Paper_A4”), the processing transitions from step S1009 tostep S1010, and the CPU 104 determines the paper information “Paper_A4”to be the paper information to be used by the print job.

By the first embodiment, as explained above, configuration is taken sothat paper information can be registered in a state in which information(for example “RES”) indicating inputting upon use is set for paperinformation attributes such as the paper size, the paper type, and thegrammage. Cases in which paper information, for which this information(RES) is set for the paper size, for example, which is an attribute ofthe paper information, is set to a sheet feed tray are considered. Ifthe sheet feed tray is provided with a paper size auto-detect mechanismfor the paper actually set in the sheet feed tray, the paper size of thepaper information can be automatically set to a paper size that isdetected by the auto-detect mechanism. Because of this, the effort of auser inputting attributes such as the paper size can be reduced.

Also, by using a value indicating inputting upon use upon theregistration of the paper information, paper information that isdifferent to other paper information by only some attribute (forexample, the paper size) can be registered as a single paper informationitem (FIG. 9B). Because of this, the number of paper information itemsregistered can be reduced.

Also, when there is paper information registered by setting informationindicating inputting upon use for an attribute of the paper information,the value that the user actually uses is set for that information.Because of this, information indicating inputting upon use can beregistered as the paper information for which the value is actuallyfinalized.

Also, in cases where the values of the attributes of the paperinformation specified in the print job include information indicatinginputting upon use, paper information including attributes matchingattributes specified by the print job from out of the paper informationgenerated by deriving from the paper information specified by the printjob is searched. Also, the paper information, having been found, can bedetermined to be the paper information to be used by the print job.

Because by the first embodiment an attribute of registered paperinformation can be set by inputting when the paper of the paperinformation is used for printing, paper information for which only a fewattributes have multiple differing types can be registered as a singlepaper information item. Because of this, the number of paper informationitems that are registered is reduced, and management of paperinformation can be performed easily.

Also, with attributes input when used for printing, new paperinformation can be registered by rewriting an attribute of the paperinformation registered with an attribute input upon use. Because ofthis, there is the effect that the effort of paper informationregistration can be simplified because new paper information can beregistered by inputting the attribute that is set only when inputtingupon use.

Second Embodiment

FIG. 11 depicts a view for showing a configuration of a multi functionperipheral (MFP) which is an example of the image forming apparatusaccording to the second embodiment of the present invention and aconfiguration of a system including this MFP.

A controller 1101 controls the multi function peripheral, and has ahardware configuration shown in FIG. 12. A scanner 1102 is controlled bythe controller 1101, and generates image signals corresponding to animage of an original by scanning the original. A printer engine 1103 iscontrolled by the controller 1101, and prints an image onto a sheet inaccordance with image data supplied from the controller 1101. Theprinter engine 1103 is connected to a finisher 1104, and the finisher1104 executes post-processing such as stapling processing, for example,on a plurality of pieces of paper output from the printer engine 1103.The finisher 1104 is controlled by the controller 1101. A networkinterface 1105 provides bidirectional communication with a network tothe controller 1101, and is connected to a personal computer 1107 viathe network. A console unit 1106 has a display unit and a keyboard, andalong with displaying information from the controller 1101, it transmitsinstructions from the user input via the console unit 1106 to thecontroller 1101. Note, the display unit is provided with a touch panelfunction, receives operation from the user via a screen of the displayunit, and transmits them to the controller 1101.

FIG. 12 is a block diagram for showing a hardware configuration of thecontroller 1101, and connected peripherals, according to the secondembodiment. Note, portions that are common with FIG. 11 are shown withthe same numerals in FIG. 12.

Within the controller 1101, the CPU 1201, via a bus 1209, is connectedto a memory 1202, a console unit 1106 comprising a display unit 1203 anda keyboard 1204, a ROM 1210, and a disk 1211. Various programs that theCPU 1201 executes and data are stored in the disk 1211 (storage medium)which may be a hard disk drive or a floppy disk, are read outsequentially as necessary from the memory 1202, and executed under thecontrol of the CPU 1201. The disk 1211 may be built into the MFP or maybe removable from the MFP. Furthermore, the programs may be downloadedfrom another MFP, a server, or the like, via a network, and stored inthe disk 1211. Also, the memory 1202 may have both such functions of avolatile memory such as a DRAM and a non-volatile memory such as anSRAM, or the memory 1202 may be a volatile memory and the disk 1211 anon-volatile memory.

The CPU 1201 performs display by writing data to the display unit 1203,and instructions are input from the user by the CPU 1201 receiving datafrom the display unit 1203 which is a touch panel, or the keyboard 1204.The input information is transferred to either the memory 1202 or thedisk 1211 and stored, and is used for various processing. Also, thenetwork interface 1105 is connected to the bus 1209. Furthermore, theprinter engine 1103, the finisher 1104, and the scanner 1102 areconnected to the bus 1209.

The image data is input from the scanner 1102 or the network interface1105, and stored in the memory 1202 or the disk 1211 of the controller1101. Also, it also is possible that image data be stored in removablememory beforehand, and that the image data can be taken by mounting thememory to the controller 1101. Movement or copying of the image datastored in the disk 1211 to the memory 1202 becomes possible, and it ispossible to compose various additional images (for example, pagenumbers) to the image data on the memory according to the contentinstructed from the console unit 1106. Note, the printer engine 1103,the finisher 1104 and the scanner 1102 may not be inside of the MFP, butrather each may exist as an individual peripheral device on a network,and the controller 1101 of the MFP may control them.

FIG. 13 depicts an outline view of the image forming apparatus (MFP)according to the second embodiment.

The scanner 1102, which is an image input device, by illuminating animage on a paper original and scanning the original with a CCD linesensor, converts the image of the original placed on the scanner 1102into electronic image data. With the image data thus electronicallyconverted, such things as a color determination, a size determination,and the like, of the original are performed.

The printer engine 1103, which is an image output device, prints theimage data on the paper, performs post-processing such as stapling andbinding on the paper, and outputs it. Activation and stopping of theprint operation are performed by instruction from the CPU 1201 of thecontroller 1101.

Feed cassettes 1305 houses paper used for printing, and is comprised ofa single cassette or of a plurality of cassettes. It is possible to pullout each cassette, and in cases where one wishes to change the paperhoused in a cassette, the paper can be changed by pulling out thatcassette, removing the paper, setting the paper that one wishes tochange, and returning the cassette.

The information of the paper stored in the cassette is stored in a dataconfiguration as shown in FIG. 15. The information of the paper isstored in the memory 1202 or the disk 1211.

FIG. 14 depicts a top view of the console unit 1106 of the image formingapparatus according to the second embodiment.

The display unit 1203 has a touch panel sheet affixed on a liquidcrystal display, for example, and as well as displaying operationscreens and softkeys, it transmits position information to the CPU 1201when displayed keys are pressed. A start key 1402 is used in cases whereinitiation of read operations of an original image, and the like, isinstructed. In a center part of the start key 1402 is arranged a dualcolor LED 1403, having both green and red colors, which indicateswhether or not the current state is such that the start key 1402 can beused is made, depending on the light emission color of the LED 1403. Astop key 1404 is made to have the operation of stopping an operatingoperation. A numeric keypad 1405 is comprised of a group of numeral andcharacter buttons, and is used for instructing a setting of a number ofcopies or a switching of screens of the display unit 1203. A user modekey 1406 is pressed in cases where device setting is performed. Note,the keyboard 1204 of FIG. 12 corresponds to the hard keys 1402-1406shown in FIG. 14.

FIG. 16 depicts a view for explaining a mechanism for automaticallydetecting the size of the paper set (housed) in the cassette of theimage forming apparatus according to the second embodiment.

This Figure is a view in which the cassettes 1305 is seen from above. Onthe cassettes 1305, guides 1603 and 1604, which can move freely on therails 1601 and 1602, are arranged, and adjustment can be made of thepositions of these rails so as to match the size of the paper to be set.Sensors 1605 and 1606 detect at what positions the guides 1603 and 1604are on the rails 1601 and 1602. It is possible to automatically detectthe size of the paper set in the cassettes 1305 by the sensors 1605 and1606.

FIGS. 17A-17E depict views for explaining examples of screens, which areuser mode screens displayed on the console unit 1106 in the MFPaccording to the second embodiment, for cases in which cassette papersize settings and paper type registration or setting is performed.

When the user presses the user mode key 1406 of the console unit 1106, auser mode screen shown in FIG. 17A is displayed. From this screenregistration and setting of the paper size can be performed.

First of all, explanation will be given for a method of paperinformation registration.

When the user presses a “paper registration” button 1702 on the screenof FIG. 17A, the paper information registered screen shown in FIG. 17Bis displayed. In the screen of FIG. 17B, registered paper information isdisplayed. Here, “thin paper”, “thick paper” and “plain paper” areregistered as paper types, and the grammages have the sizes 70 g/m², 110g/m², and 100 g/m² respectively. Also, the paper sizes are A3, A4 and“not set” respectively. In this way, for each of the sizes set for thepaper information, there exist those for which a size is set, and thosefor which a size is not set (“not set”).

When a paper information add button 1705 is pressed, the paperinformation add screen shown in FIG. 17C is displayed. Here, by pressinga button corresponding to the item that a user wishes to change from outof a paper information change button group 1706, the user can change thepaper type, the grammage, and the size, and by pressing an OK button1707, paper information for which the attribute is changed isregistered.

Next, explanation will be given a paper information setting method.

When a “paper setting” button 1703 on the screen of FIG. 17A is presseda paper setting screen shown in FIG. 17D is displayed.

A cassette selection button group 1708 is arranged on the paper settingscreen, and paper sizes of the cassettes auto-detected by the sensors1605 and 1606 explained with FIG. 16 are displayed. When a user selectsone of the cassettes from a cassette selection button group 1708 andpresses a setting button 1709, the paper information setting screenshown in FIG. 17E is displayed.

For the paper information setting screen of FIG. 17E, a list of paperinformation items explained with FIG. 17B is displayed. Here, forexample, the setting of the paper information for the highest levelcassette (CASSETTE 1) of the cassettes 1305 is selected in FIG. 17D.When paper information 1710 is selected on the screen of FIG. 17E, thepaper information where the paper type of the paper information is “thinpaper”, and the paper size is “A4” is set for CASSETTE 1.

With this, the paper information of “CASSETTE 1” shown in FIG. 15 ischanged to “thin paper”, “70 g/m²” and “A3”, and a detection mode columnof CASSETTE 1 is set to “manual”.

Meanwhile, in cases where paper information 1711, for which the papersize is not set, is selected, the paper size auto-detected by thesensors 1605 and 1606 explained with FIG. 16 is set. In such a case, thepaper information of “CASSETTE 1” shown in FIG. 15 is “plain paper”,“100 g/m²”, “A4” as illustrated in FIG. 15, and the detection mode is“auto”.

For example, when the paper information is assigned for each cassette asillustrated in FIG. 15, a print job specifying a cassette selection is“auto” and the paper size “A3” is input. In such a case, CASSETTE 2 inwhich plain paper of the paper size “A3” is housed is selected, paper isfed from CASSETTE 2, and printing is performed.

FIG. 18 is a flowchart for describing processing executed in a casewhere a user closes the cassettes 1305 having set paper into thecassettes, or where a user moves the guides 1603 and 1604 of a cassettein the image forming apparatus according to the second embodiment. Note,the processing illustrated in the flowchart is executed by a programthat executes the processing being installed in the disk 1211, loadedinto the memory 1202 upon execution, and executed under the control ofthe CPU 1201.

Firstly, in step S1801, the CPU 1201 sets a variable N stored in thememory 1202 to “1”. Next, the processing proceeds to step S1802, and theCPU 1201 detects, with the sensors 1605 and 1606 arranged on thecassette, the size of the paper housed in an N-th sheet feed tray (thefirst is CASSETTE 1) of the cassettes 1305. Next, the processingproceeds to step S1803, and it is determined whether or not thedetection mode column of the paper information of the N-th cassette is“auto”, referencing the paper information shown in FIG. 15. When it isdetermined that it is “auto”, the processing proceeds to step S1804, andthe size of the paper information of the cassette corresponding to FIG.15 is updated with a size detected by the sensors 1605 and 1606 in stepS1802. Next, the processing proceeds to step S1805, and because here thecassettes 1305 comprise four levels of cassettes, it is determinedwhether the processing has completed up to the fourth cassette. When theprocessing has not completed up to the fourth cassette, the processingproceeds to step S1806, the value of the variable N is incremented byone, and the processing returns to step S1802.

Meanwhile, when the detection mode column of the paper information ofthe N-th cassette is not “auto” in step S1803, step S1804 is skipped andthe processing proceeds to step S1805.

FIG. 19 is a flowchart for describing other processing executed in acase where a user closes the cassettes 1305 having set paper into thecassettes, or where a user moves the guides 1603 and 1604 of a cassettein the image forming apparatus according to the second embodiment. Note,the processing illustrated in the flowchart is executed by a programthat executes the processing being installed in the disk 1211, loadedinto the memory 1202 upon execution, and executed under the control ofthe CPU 1201.

The difference between FIG. 19 and FIG. 18 is that after the paper sizeis detected by the sensors 1605 and 1606 in step S1801, it is determinedwhether or not the detection mode of the paper information of thecassette is “auto” in FIG. 18. In contrast to this, in FIG. 19, first itis determined whether or not the detection mode of the paper informationof the cassette is “auto”, and only in cases where it is “auto” is thepaper size detected by the sensors 1605 and 1606.

Firstly, in step S1901, the CPU 1201 sets the variable N stored in thememory 1202 to “1”. Next, the processing proceeds to step S1902, and theCPU 1201 determines whether or not the detection mode column of thepaper information of the N-th cassette is “auto” referencing the paperinformation shown in FIG. 15. When, in step S1902, it is determined thatit is “auto”, the processing proceeds to step S1903, and the size of thepaper housed in the N-th sheet feed tray of the cassettes 1305 (thefirst one is CASSETTE 1) is detected by the sensors 1605 and 1606arranged in the cassette. Next, the processing proceeds to step S1904,and the CPU 1201 updates the size of the paper information of the N-thcassette corresponding to FIG. 15 with the size detected by the sensors1605 and 1606 in step S1903. Then, the processing proceeds to stepS1905, and because the cassettes 1305 comprise fourth levels ofcassettes, it is determined whether the processing up to the fourthcassette has completed. When the processing has not completed up to thefourth cassette, the processing proceeds to step S1906, the value of thevariable N is incremented by one, and the processing returns to stepS1902. Meanwhile, when the detection mode column of the paperinformation of the N-th cassette is not “auto” in step S1902, theprocessing proceeds to step S1905.

In this way, by the second embodiment, it is possible to update thepaper size of the paper information that is set for the cassetteautomatically by using the size of the paper actually housed in thecassette by setting the detection mode of the paper information that isset in the cassette to “auto”. Note, explanation was given for cases inwhich the sensors 1605 and 1606 detect the size of the paper, but it ispossible to update the type or the grammage of the paper informationwith the type or the grammage of the paper actually housed in thecassette if a sensor, that can detect characteristics of the surface ofthe paper, the grammage of the paper, or the like, is arranged in thecassette, for example.

FIG. 20 depicts a view for showing an example of a screen for confirmingconsistency between paper sizes detected in the cassettes in the imageforming apparatus according to the second embodiment and the paper sizesof paper information that a user set for the cassettes.

When the user mode key 1406 of the console unit 1106 is pressed, thescreen shown in FIG. 17A is displayed, and by the “cassette information”button 1704 being pressed on the screen of FIG. 17A, this screen isdisplayed. Note, the information of the screen is generated based on thedata of the paper information of FIG. 15.

In auto-detect 2001, the paper sizes detected by the sensors 1605 and1606 of each of the cassettes is displayed. Also, in the paperinformation 2002, the paper sizes set in the paper information shown inFIG. 15, for example, are displayed. In consistency 2003, theconsistency between detected paper sizes, and the paper sizes set in thepaper information is displayed. In other words, the paper sizes of bothauto-detect 2001 and the paper information 2002 are set, and whenauto-detect 2001 and the paper size of the paper information 2002 aredifferent to each other “mismatch” is displayed, and when that is notthe case “match” is displayed.

By the above, the user can easily know whether a paper sizeauto-detected by the cassette is being used or whether a paper size setmanually is being used, and convenience is dramatically improved.

Third Embodiment

Next, a third embodiment, which is a variation of the second embodimentof the present invention, will be explained. Note, because theconfiguration of the image forming apparatus according to the thirdembodiment is similar to that of the previously described secondembodiment, explanation is omitted.

FIG. 21 depicts a view for illustrating a data configuration of paperinformation (sheet information) in a third embodiment.

In FIG. 21, the paper information includes the name, the grammage, andthe size of the paper, but it may include other information also. Bysetting this paper information for a paper feed cassette (sheet feedingunit), the image forming apparatus is able to identify the type of paperthat the paper feed cassette stores.

FIGS. 22A, 22B and 22C depict views for showing examples of screens fora user to operate when setting paper information for a paper feedcassette (sheet holding unit) in the third embodiment.

FIG. 22A depicts a view for illustrating an example of a screen forselecting the paper feed cassette for which to set paper information. Auser selects a change target paper feed cassette from out of the groupof buttons 2201 of FIG. 22A, and presses a set button 2202. With this, ascreen for setting the paper information for the selected paper feedcassette is displayed as illustrated in FIG. 22B, for example.

In FIG. 22B, the user selects desired paper information from the groupof buttons 2206 and presses an OK button. With this, in cases where amismatch occurs between the paper size auto-detected in the specifiedpaper feed cassette, and the paper size of the paper information set forthe paper feed cassette via the screens of FIG. 22A and FIG. 22B, forexample, a screen shown in FIG. 22C is displayed. In FIG. 22C, as shownin numeral 2209, a paper size mismatch is indicated to have occurred ina first paper feed cassette. Note, in the screen example of FIGS. 22A to22C, the type of paper is displayed by characters, but this may bedisplayed by icons, illustrations, or the like.

FIG. 23 is a flowchart for describing processing for when a mismatchbetween an auto-detected paper size and a paper size set in paperinformation occurs in the image forming apparatus according to the thirdembodiment. Note, the processing illustrated in the flowchart isexecuted by a program that executes the processing being installed inthe disk 1211, loaded into the memory 1202 upon execution, and executedunder the control of the CPU 1201.

Firstly, in step S2301, the CPU 1201 displays a screen for selecting apaper feed location on the display unit 1203 as shown in FIG. 22A, forexample. Then, the processing proceeds to step S2302, and the CPU 1201receives an instruction for the paper feed cassette that the userselected when the user selects the paper feed cassette and presses thesetting button 2202 on the screen of FIG. 22A. Then, the processingproceeds to step S2303, and the CPU 1201 displays the paper informationsetting screen as shown in FIG. 22B, for example. Then, the processingproceeds to step S2304, and the CPU 1201 obtains the paper informationthat the user selected on the paper information setting screen. Then,the processing proceeds to step S2305, and the CPU 1201 determineswhether or not the set paper information includes the paper size.Because in the example of FIG. 22B the size is “not set” in the casewhere the paper is plain paper, it is necessary to confirm whether ornot the paper size exists, for example. If the size is set, theprocessing proceeds to step S2306, and the CPU 1201 compares the setpaper size, and the size of the paper detected to be loaded into thepaper feed cassette selected in step S2302, and determines whether ornot they match. Here, when the CPU 1201 determines that these do notmatch, the processing proceeds to step S2307, and it displays analerting screen on the display unit 1203 of the console unit 1106.

Note, when the CPU 1201, in step S2305, determines that the set paperinformation does not include the paper size, the processing proceeds tostep S2309. In step S2309, the CPU 1201 sets the paper size detected bythe guides 1603 and 1604 as shown in FIG. 16 as the paper size of thepaper feed cassette, and the processing proceeds to step S2308. Also,when, in step S2306, it is determined that the set paper size, and thepaper size actually loaded into the paper feed cassette match, theprocessing proceeds to step S2308.

In step S2308, the CPU 1201 displays a screen as is shown in FIG. 22A.With this, if the user wishes to cancel the mismatching size situation,the user once again performs the processing from the selection of thepaper feed cassette. Also, when the sizes are matching, the user pressesa close button on the screen of FIG. 22A.

Note, a shortcut button may be arranged on the screen of FIG. 22C fortransitioning to the screen of FIG. 22A. With this, the user is able tocancel a state in which the size of the paper actually loaded into thepaper feed cassette, and the paper size of the paper information set forthe paper feed cassette are inconsistent with simple operations.

FIG. 24 is a flowchart for showing processing when a paper size mismatchoccurs upon detection of opening or closing of a paper feed cassettedoor, or the pulling out/putting in of a cassette in the image formingapparatus according to the third embodiment. Note, the processingillustrated in the flowchart is executed by a program that executes theprocessing being installed in the disk 1211, loaded into the memory 1202upon execution, and executed under the control of the CPU 1201.

Firstly, in step S2401, the CPU 1201 automatically detects the size ofthe paper loaded into the paper feed cassette with the guides 1603 and1604 of the paper feed cassette. Next, the processing proceeds to stepS2402, and the CPU 1201 determines whether or not the size of the paperautomatically detected to be loaded in step S2401, and the paper size ofthe paper information set by the user via the screens of FIG. 22A andFIG. 22B match. When, in step S2402, the CPU 1201 determines that thesizes do not match, the processing proceeds to step S2403, and the CPU1201 alerts the user by displaying an alerting screen (FIG. 22C).

Note, it is advantageous that the paper feed cassette for which themismatch in sizes occurs be made such that the user cannot use it forprinting for error handling. For example, configuration may be takensuch that the user cannot use the paper feed cassette for which the sizemismatch occurred for printing by handling the paper feed cassettesimilarly to when an out of paper error occurs. Also, a paper feedcassette for which a size mismatch occurred may be handled in adistinguishable way to other errors. Also, in step S2402, in cases wherethe paper information set by the user does not include the paper size,similar processing may be performed to step S2309 of FIG. 23.

As explained above, by the third embodiment, in cases where the size ofthe paper included in paper information set for a paper feed cassette,and the size of the paper loaded into the paper feed cassette do notmatch, the user can be notified to that effect.

Also, by displaying an alerting screen (FIG. 22C) to the user at atiming at which the user sets paper information for the paper feedcassette, or at a timing at which a guide of the paper feed cassette ismoved, the user can notice the mismatching state easily.

Other Embodiments

Embodiments of the present invention can also be realized by a computerof a system or apparatus that reads out and executes computer executableinstructions recorded on a storage medium (e.g., non-transitorycomputer-readable storage medium) to perform the functions of one ormore of the above-described embodiment(s) of the present invention, andby a method performed by the computer of the system or apparatus by, forexample, reading out and executing the computer executable instructionsfrom the storage medium to perform the functions of one or more of theabove-described embodiment(s). The computer may comprise one or more ofa central processing unit (CPU), micro processing unit (MPU), or othercircuitry, and may include a network of separate computers or separatecomputer processors. The computer executable instructions may beprovided to the computer, for example, from a network or the storagemedium. The storage medium may include, for example, one or more of ahard disk, a random-access memory (RAM), a read only memory (ROM), astorage of distributed computing systems, an optical disk (such as acompact disc (CD), digital versatile disc (DVD), or Blu-ray Disc (BD)™),a flash memory device, a memory card, and the like.

While the present invention has been described with reference toexemplary embodiments, it is to be understood that the invention is notlimited to the disclosed exemplary embodiments. The scope of thefollowing claims is to be accorded the broadest interpretation so as toencompass all such modifications and equivalent structures andfunctions.

This application claims the benefits of Japanese Patent Application No.2013-55414, filed Mar. 18, 2013, and Japanese Patent Application No.2014-028967, filed Feb. 18, 2014, which are hereby incorporated byreference herein in their entirety.

1. A printing apparatus comprising: a sheet holding unit having adetection unit for detecting a size of a sheet which is held, configuredto hold a sheet; a storage unit configured to store sheet informationincluding at least a size of a sheet as information representing asheet; a setting unit configured to set first sheet information selectedby a user in association with the sheet holding unit from a plurality ofitems of sheet information stored by the storage unit; and anotification unit configured to notify the user of a mismatch in a casewhere a size of a sheet that the first sheet information set by thesetting unit indicates, and a size of a sheet detected by the detectionunit are mismatched.
 2. The printing apparatus according to claim 1,further comprising: a display unit configured to display an operationscreen for the user to select sheet information to be set in associationwith the sheet holding unit from out of a plurality of items of sheetinformation stored by the storage unit, wherein the notification unitnotifies the user of a mismatch under the condition that setting of thefirst sheet information in association with the sheet holding unit isinstructed in the operation screen, and a size of a sheet detected bythe detection unit and a size of a sheet that the first sheetinformation indicates are mismatched.
 3. The printing apparatusaccording to claim 1, wherein the notification unit notifies the user ofa mismatch under the condition that opening or closing of the sheetholding unit is detected, and a size of a sheet detected by thedetection unit and a size of a sheet that the first sheet informationset by the sheet holding unit indicates are mismatched.
 4. The printingapparatus according to claim 1, wherein the notification unit displays ascreen indicating a mismatch.
 5. A method of controlling a printingapparatus having a sheet holding unit having a detection unit fordetecting a size of a sheet which is held, configured to hold a sheet,and a storage unit configured to store sheet information including atleast a size of a sheet as information representing a sheet, the methodcomprising: setting first sheet information selected by a user inassociation with the sheet holding unit from a plurality of items ofsheet information stored in the storage unit; and notifying the user ofa mismatch in a case where a size of a sheet that the first sheetinformation set in the setting indicates, and a size of a sheet detectedby the detection unit are mismatched.
 6. The method of controllingaccording to claim 5, further comprising: displaying, on a display unit,an operation screen for the user to select sheet information to be setin association with the sheet holding unit from out of a plurality ofitems of sheet information stored in the storage unit, wherein, in thenotifying, the user is notified of a mismatch under the condition thatsetting of the first sheet information in association with the sheetholding unit is instructed in the operation screen, and a size of asheet detected by the detection unit and a size of a sheet that thefirst sheet information indicates are mismatched.
 7. The method ofcontrolling according to claim 5, wherein in the notifying, the user isnotified of a mismatch under the condition that opening or closing ofthe sheet holding unit is detected, and a size of a sheet detected thedetection unit and a size of a sheet that the first sheet informationset by the sheet holding unit indicates are mismatched.
 8. The method ofcontrolling according to claim 5, wherein in the notifying, a screenindicating a mismatch is displayed.
 9. A non-transitorycomputer-readable storage medium storing a computer program for causinga computer to execute a method of controlling a printing apparatushaving a sheet holding unit having a detection unit for detecting a sizeof a sheet which is held, configured to hold a sheet, and a storage unitconfigured to store sheet information including at least a size of asheet as information representing a sheet, the method comprising:setting first sheet information selected by a user in association withthe sheet holding unit from a plurality of items of sheet informationstored in the storage unit; and notifying the user of a mismatch in acase where a size of a sheet that the first sheet information set in thesetting indicates, and a size of a sheet detected by the detection unitare mismatched.